Fuse and fuse carrier.



T. E. MURRAY.

FUSE AND FUSE CARRIER.

APPLICATION FILED APR. so, 1913.

Patented Nov. 18, 1913.

I THOMAS 1L MURRAY, .0151 NEW YORK, N. Y,

-FUSE-AND- FUSE CARRIER.

Specification-of letters Patent.

Patented Nov. 18,1913.

Application filed April 30, 1913. Serial N 0. 764,560.

To all whom it may concern Be it known that I, THOMAS E. MURRAY, acitizen of the United States, residing at New York, in the county of NewYork and State of New York, have invented a certain new and usefulImprovement in Fuses and Fuse-Carriers, of which the following is aspecification.

The invention is a fuse, and carrier therefor. The fuse is bent over,with a portion of the inner surface of each arm in contact with a plateof conducting material, said plates being supported upon opposite sidesof a carrier of insulating material. Said plates are preferablyresilient so as to hold the fuse closely against the contacts, betweenwhich the device is placed.

In the accompanying drawings-Figure l is an edge and Fig. 2 is a sideelevation of my fuse carrier and fuse. Fig. 3 .is an edge and Fig. 4 isa side elevation of a.

modified form of the same. Similar numbers of reference indicate likeparts.

1 is the carrier formed preferably of porcelain or other refractoryinsulating material. In the upper edge of said carrier is a shoulderedrecess 2. The sides of said carrier converge .downwardly to inclinedshoulders 3, below which is a narrowed portion 4. Seated in the recess 2is a thin partition 5 of fiber or other insulating material. 6 and 7 areplates of cop )er. The upper portions of said plates are ent over underthe shoulders in recess 2, as shown at 8. The lower portions of saidplates are bent upwardly, as shown at 9. The fuse strip 10 is bent overthe partition 5, lies-in contact with the opposite sides of saidpartition and the outer surfaces of said copper plates, and

v at its lower edges is bent over the upwardly bent portions 9 of saidplates, as shown at 11.

In the modified. form of my device shown in Figs. 3 was, grooves 12 aremade in the upper surface of the carrier 1, in which are hooked the. uper edges 13' of the copper plates 6 and. ,the lower edges 14 of saidplates being hooked in corresponding grooves in the bottom of saidcarrier. 4 In upon and resiliently support said copper plates. The fusestrip 10 extends over the outer surface of the copper plates toshoulders 16 thereon, to which shoulders itis connected by soldering, orby dovetail jointing, as indicated at 17, Fig. 4:. The fuse strip at theportion which extends over the partition 5 is preferably slit into anumber of narrow sections, each of which is diminished in width, asshown at 18, so as to localize the blowing point at the upper edge ofsaid partition. The diminished portions may lie in notches 19 in saidedge, as shown in Fig. 2. The opening 20 in the carrier 1 is for theinsertion of a lever arm for supporting the carrier and for moving itinto and out of the usual' fixedcontacts, indicated by dotted lines at21, Fig. 1. By reason of the described construction, the copper platesfi, 7 strengthen and support the fuse strip,

while also, by theirresiliency, pressing it closely against the contacts21.

I claim:

1. A carrier, separated plates of conducting material resilientlysupported on opposite sides thereof, and-a fuse in loop. form supportedon said carrier, having its loop prO ectJ ng arms in contact with 83,161plates;

2. A wedg'e-shaped carrier of insulating material, separated plates ofconducting material. secured to the thicker end ofsaid wedge-shapedcarrier and extending in front of tie tapered faces thereof, and a fusein loop form supported'on said carrier, having its loop projectingbeyond said thicker end and its arms in cont-act with said plates.

3. A carrier, separated plates of conducting material disposed onopposite sides thereof, a partition of insulating material projectingfrom one end of said carrier and disposed between said lates, and a fusedoubled over the outer e ge of said partition and extending along theopposite sides of said partition and 0 said carrier.

4. A carrier, having a recess, separated beyond one end thereof and itsplates of conducting material, eacli having the opposite sides of saidpartition and of one end bent over and received in said resaid carrier.10 cess and extending from said recess along In testimony whereof I haveaflixed my opposite sides of said carrier, a partition of signature inpresence of two witnesses.

Insulating material entering stud carrier THOMAS E. MURRAY.- recessbetween said bent over ends of said -Witnesses:

plates, and a fuse doubled over the outer GERTRUDE T. PORTER,

edge ofsaid partition and extending along MAY T. MCGARRY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

